/Engine/Plugins/Enterprise/VariantManager/Source/VariantManager/Public/VariantManager.h
Thumbnail operations Returns one for each variant. These can be nullptr
[TArray](API\Runtime\Core\Containers\TArray)< [FObjectThumbnail](API\Runtime\Core\Misc\FObjectThumbnail) * > GetVariantThumbnails ( const [TArray](API\Runtime\Core\Containers\TArray)< [UVariant](API\Plugins\VariantManagerContent\UVariant) * > SrcArray )